JR Freight Class DB500
The Class DB500 was developed to replace ageing Class DE10 diesel-hydraulic locomotives used for shunting duties at smaller freight terminals such as Shimonoseki in Yamaguchi Prefecture. The locomotive has a single water-cooled four-cycle straight six-cylinder diesel engine, with a power output of 184 kW (247 hp), sufficient to haul 500-tonne trains.
The Class DB500 entered service at Shimonoseki Freight Terminal from the start of the revised timetable on 4 March 2017.
The DB500 classification for this locomotive type is explained below.
- D: Diesel locomotive
- B: Two driving axles
- 500: Diesel-hydraulic locomotive
- DB500形液体式内燃機関車 [Class DB500 diesel-hydraulic locomotive]. Japan Railfan Magazine (in Japanese). Vol. 57 no. 676. Japan: Koyusha Co., Ltd. August 2017. p. 65.
- DB500形液体式内燃機関車 続報 [Class DB500 diesel-hydraulic locomotive (Follow-up report)]. Japan Railfan Magazine (in Japanese). Vol. 57 no. 678. Japan: Koyusha Co., Ltd. October 2017. p. 67.
- Hokuriku Heavy Industries website (in Japanese)